Teodoro, M., Damineli, A., Heathcote, B., Richardson, N., Moffat, A., St-Jean, L., et al. (2016). He II {lambda}4686 Emission from the Massive Binary System in {lambda} Car: Constraints to the Orbital Elements and the Nature of the Periodic Minima. Astrophysical Journal, 819: 131, pp. 131. doi:10.3847/0004-637X/819/2/131.